package com.yang.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.yang.reggie.common.R;
import com.yang.reggie.entity.Employee;
import com.yang.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * 员工管理
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
//        1、将页面提交的密码进行hd5加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
//        2、根据页面提交的用户名查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
//        3、如果查询结果为空返回登录失败
        if (emp == null) {
            return R.error("账户不纯在");
        }
//        4、密码比对
        if (!emp.getPassword().equals(password)) {
            return R.error("密码错误");
        }
//        5、查询员工状态
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }
//        6、登陆成功，将员工id存入Session并返回登录结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 退出登录
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody Employee employee){
        log.info("新增员工：{}",employee.toString());
//        设置初始密码进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
//      信息修改时间跟新时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//        获得当前登录用户的id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);
        employeeService.save(employee);
        return R.success("新增员工成功");
    }


    /**
     * 分页
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();

        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }


    /**
     * 根据ID修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody Employee employee){
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息");
        Employee employee = employeeService.getById(id);
        if (employee == null) {
            return R.error("没查询到信息");
        }
        return R.success(employee);
    }

}
